1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_MEDIA_DEVICE_CALLBACK_H 18 #define ANDROID_MEDIA_DEVICE_CALLBACK_H 19 20 #include <system/audio.h> 21 #include <media/AudioSystem.h> 22 23 namespace android { 24 25 // keep in sync with AudioSystem.java 26 #define AUDIO_NATIVE_EVENT_ROUTING_CHANGE 1000 27 28 class JNIDeviceCallback: public AudioSystem::AudioDeviceCallback 29 { 30 public: 31 JNIDeviceCallback(JNIEnv* env, jobject thiz, jobject weak_thiz, jmethodID postEventFromNative); 32 ~JNIDeviceCallback(); 33 34 virtual void onAudioDeviceUpdate(audio_io_handle_t audioIo, 35 audio_port_handle_t deviceId); 36 37 private: 38 void sendEvent(int event); 39 40 jclass mClass; // Reference to AudioTrack/AudioRecord class 41 jobject mObject; // Weak ref to AudioTrack/AudioRecord Java object to call on 42 jmethodID mPostEventFromNative; // postEventFromNative method ID. 43 }; 44 45 }; // namespace android 46 47 #endif // ANDROID_MEDIA_DEVICE_CALLBACK_H 48